REUTERS/THOMAS PETER

KHARKIV REGION, Ukraine 鈥 Ukrainian tank platoon commander Valentyn Bohdanov remembers a time earlier in Russia鈥檚 war when heavy armor fought pitched battles like boxers trading punches in the ring. Four years into the conflict, he says such showdowns are all but impossible.聽

Small but deadly 鈥渇irst-person-view鈥 (FPV) drones now dominate the skies above Ukraine鈥檚 battlefields, making it extremely risky for armored vehicles to move, said Mr. Bohdanov, a senior sergeant in Ukraine鈥檚 127th Separate Heavy Mechanized Kharkiv Brigade.聽

鈥淭hey won鈥檛 enter an open field: they鈥檒l be peppered by FPV drones and stronger ones,鈥 said the 36-year-old, who goes by the military call sign 鈥淏odia.鈥

These days, his T-72 tank, which was captured from the Russians, remains hidden beneath webbing near the snowy frontline in the northeast region of Kharkiv 鈥 reduced, effectively, to a static piece of artillery.

Mr. Bohdanov, who has served since early in Moscow鈥檚 February 2022 invasion, has seen traditional military tactics upended as technology has forced both sides to make new battlefield calculations.

Thousands of precision drones, often costing only several hundred dollars apiece, roam the skies daily across an expanding 鈥渒ill zone鈥 along the 1,200-kilometer front. They are joined by a growing range of more powerful drones capable of flying farther and carrying heavier payloads.

The ever-present threat from the sky makes virtually any movement 鈥 from troop rotations and evacuations to tank assaults 鈥 increasingly deadly.

Drone-inflicted casualties have jumped from less than 10% of the total in 2022 to up to 80% last year, as much of the war has morphed into an 鈥渁ir battle of mutual denial,鈥 according to a report by the French Institute of International Relations published this month.

It described the shift as part of 鈥渁 new logic of warfare defined by speed of innovation, rapid adaptation, and seamless technological integration鈥 that would include other technologies including artificial intelligence.

鈥業N THE AIR ALL THE TIME鈥
Mobile drone-hunting teams, like the one Reuters recently visited near the besieged eastern city of Kostiantynivka, are now commonplace.

Patrolling roads shrouded in anti-drone netting and littered with the charred remains of vehicles, members are on constant alert for drones ranging from FPVs to larger, long-range Shaheds. They are tasked with defending supply routes critical for troops in a section of the front line where Russia is advancing.

Drone-hunter 鈥淢arine鈥 of the 93rd Mechanized Brigade, who introduced himself by his call sign, recalled once seeing 54 drones attack a single target within one hour.

鈥淭hree would circle, another would attack while the others join,鈥 he said. 鈥淭hey鈥檙e in the air like that all the time, not letting anyone get away.鈥

Many soldiers who have been directly under fire describe being overwhelmed by the speed and agility of FPVs. Footage of their strikes now saturate social media on both sides.

Speaking in a military hospital in the northeastern city of Kharkiv, Andriy Meskov said he had been returning from an assignment when he and two comrades were attacked by drones that whizzed after them as they sought cover.

鈥淲e ran into a building, not really expecting that it would follow us,鈥 said Mr. Meskov, 42, himself a drone pilot in the 151st Separate Reconnaissance-Strike Battalion.

鈥淭he speed of a human being doesn鈥檛 compare to the speed of an FPV drone, so I didn鈥檛 even have time to pick up my rifle to shoot at it.鈥

NEW BATTLEFIELD LESSONS
Mr. Meskov鈥檚 knee was shattered when a drone ricocheted off his helmet and exploded near his leg.

He was eventually evacuated for medical treatment on an unmanned ground vehicle. Such ground drones are increasingly employed for tasks ranging from logistics to evacuations, to minimize casualties.

They carried out more than 7,000 missions in January, Defense Minister Mykhailo Fedorov said last week. Ukraine plans to boost their production and procurement this year, he said.

Longer evacuation times are another potentially fatal consequence of the expanding 鈥渒ill zone.鈥 Col. Viacheslav Kurinnyi, 45, chief doctor at the Kharkiv hospital where Mr. Meskov was being treated, said the drone threat to vehicles had pushed the average time for medical evacuation beyond three days.

That flies in the face of the so-called 鈥済olden hour鈥 of battlefield medicine, he added, referring to the 60-minute window when intervention is critical to saving a fighter鈥檚 life.

Ukraine鈥檚 Western allies needed to learn the lessons: 鈥淎ny countries that are preparing for war at home need to realize that there will be no 鈥榞olden hour,鈥欌 Mr. Kurinnyi said. 鈥淢aybe a 鈥榞olden day鈥 if they鈥檙e lucky.鈥

Once his hospital received a wounded soldier who had been wearing a tourniquet for more than two months.

WAITING FOR NEXT BREAKTHROUGH
Standing next to his snow-covered tank, commander Mr. Bohdanov said he believes such weapons are being rendered irrelevant and should be scaled back in favor of more long-range artillery. His crew is open to re-training to become more effective, he added.

While tanks are still used in urban battles or in poor weather conditions, armor-led attacks have largely been replaced by small infantry assaults, said military analyst Rob Lee at the Foreign Policy Research Institute.

But it is too soon to write off tanks. The pace of change means tactics could soon shift again, Mr. Lee said.

鈥淩ight now, the current role is diminished, and I think we鈥檙e waiting for the next technological breakthrough that will enable maneuvering again,鈥 he said. 鈥 Reuters